(1) a propane gas cylinder (2) ...a propane gas cylinder. (3) Combustion systems can fire on natural gas or propane.
propane [ˈprəʊpeɪn] 📢 UK📢 US
n.丙烷；
adj.微粒的，粒子的； n.微粒，粒子；
adj.（指空气）暖和的；温暖的；芳香的；能止痛的；
壮观地，令人吃惊地；
(1) a global perspective (2) Try to see the issue from a different perspective . (3) a report that looks at the education system from the perspective of deaf people
(1) profound changes in the earth's climate (2) My father's death had a profound effect on us all. (3) profound insights
profound [prəˈfaʊnd] 📢 UK📢 US
n.影响；效果；印象；所有物； vt.使发生；引起；产生（效果）；
adj.协调的；协定的；协商好的；[乐]合拍调的；
整体来看；普遍说来， 一般地说；
adj.深厚的；意义深远的；严重的；知识渊博的； n.〈诗〉深海，大洋；深渊；（灵魂）深处；
(1) The flowers give off a heady scent at night. (2) If plastic and rubber are burnt, they'll give off poisonous gases. (3) Fireflies give off flashes of light when they fly at night.
give off [ɡiv ɔf] 📢 UK📢 US
adj.<医>躁狂的，患躁狂病的；疯狂的； n.躁狂者；
发出； 放出； 散发出； 放射出；
v.积累，积聚( amass的现在分词 )；
adj.世界性的，全世界的；四海为家的；全球的； n.世界主义者；四海为家者；
(1) the sun's harmful ultra-violet rays (2) Many household products are potentially harmful. (3) Fruit juices can be harmful to children's teeth.
harmful [ˈhɑ:mfəl] 📢 UK📢 US
adj.对…有害的；能造成损害的；不利；不良；
vt.尊敬，敬重；认为，以为；考虑；估价； n.尊敬，尊重；意见，看法；评价；名声；
v.充满；
n.刺绣；刺绣品；粉饰，修饰；
(1) Radon is known to be harmful to humans in large quantities. (2) Such chemicals taken up by plants can be harmful to humans and animals. (3) Generally speaking, natural obesity should not be harmful to human bodies.
(1) He expected his daughters to be meek and submissive. (2) She followed him like a submissive child. (3) ‘You're right and I was wrong, ’ he said submissively.
(1) Entertains the most high hope. for the greatest endeavor. makes the worst plan. (2) But make no mistake: This cannot solely be America's endeavor. (3) Please give me enough time make every effort and allow of my endeavor and its result.
(1) Most galaxy associations are small and have a low density contrast. (2) Flotation is a process for separating low density solids or liquid particles from a liquid phase. (3) Since density increases with the concentration of red cells, an unusually low density may indicate anemia.
low-density [ləu ˈdensiti] 📢 UK📢 US
n.麦加（沙特阿拉伯一座城市）；朝拜的地方；仰慕的目标；发源地；
[医]低密度（的）；
adj.未被凌驾的，非常卓越的；绝伦；
n.遗产；遗赠；
(1) Price changes must not adversely affect the living standards of the people. (2) We commented adversely upon the imbecility of that message of telegraphic style. (3) Widely fluctuating exchange rates may adversely affect international trade.
adversely [əd'vɜ:slɪ] 📢 UK📢 US
n.论述，交谈；正式的讨论； vi.演说；谈论； vt.叙述；讨论；
adv.逆地，反对地；不利地；有害地；
至多， 充其量；顶多；
n.态度，立场；站姿，被放置的姿势；位置；（运动员的）始发姿势；
(1) particulate pollution (2) ...the particulate pollution in our atmosphere. (3) The key technology of the diesel exhaust particulate filter is filter regeneration.
particulate [pɑ:ˈtɪkjələt] 📢 UK📢 US
adj.富于想像力的，运用想像力的；想象或创造出来的；沉溺于想象的；虚假的；
n.<贬>窥淫癖者（喜欢窥视他人性行为）；刺探隐秘者（喜欢刺探他人的问题或私生活）；
adj.适当的；恰当的；合适的； vt.占用，拨出；
adj.微粒的，粒子的； n.微粒，粒子；
there is no place like home
📢 UK📢 US
在家千日好；
n.资本主义（制度）；资本（或财富）的拥有；资本（私人占有和生产盈利）的支配地位；
邻近，接界；近乎；接壤；濒；
n.高山，火绒草；雪绒花；
(1) Cotton clothing allows your skin to breathe. (2) Her performance breathed wit and charm. (3) His illness is a result of breathing in paint fumes over many years.
(1) She continued her recitation of the week's events. (2) The transmission began with a recitation from the Koran. (3) The letter was short — a simple recitation of their problem.
recitation [ˌresɪˈteɪʃn] 📢 UK📢 US
n.朗诵；背诵；习题课；
由…起源；取自；
vi.兴盛，兴隆；长得健壮；茁壮成长；
n.犯罪地点，案发地点；会场；（尤指）体育比赛场所；审判地；
(1) a well-ventilated room (2) The bathroom is ventilated by means of an extractor fan. (3) [不可数名词]a ventilation shaft
ventilate [ˈventɪleɪt] 📢 UK📢 US
adj.行动缓慢的； 缓缓移动的；晚的； 迟的；
n.依附；坚持；忠诚；密着；
vt.使通风；通风；公开；公开讨论；
期望，盼望；瞩望；属望；企；
(1) ‘I'm feeling really depressed. ’ ‘The winter here has that effect sometimes. ’ (2) I tried to persuade him, but with little or no effect. (3) I can certainly feel the effects of too many late nights.
effect [ɪˈfekt] 📢 UK📢 US
吸收；
adj.分布广的；普遍的；广泛应用；普及的；
n.影响；效果；印象；所有物； vt.使发生；引起；产生（效果）；
n.密度；稠密，浓厚；[物]浓度，比重；愚钝；
(1) We address and analyze issues such as the side effect and ambiguity in Han folding. (2) If doesn't the leg get hurt what side effect does dozen of long canister gesso have? (3) Honey and what take poisonous side effect together?
(1) She has six previous convictions for theft. (2) He plans to appeal against his conviction. (3) an offence which carries, on conviction, a sentence of not more than five years' imprisonment
(1) political groups agitating for social change (2) Her family are agitating to have her transferred to a prison in the UK. (3) The women who worked in these mills had begun to agitate for better conditions.
(1) carbon dioxide emissions are the primary source of greenhouse gases. (2) The Kyoto Protocol is a commitment to reduce the amounts of carbon dioxide output. (3) It adopts carbon dioxide protection welding . Chassis is treated through shot blast. It has and firmness.
carbon dioxide [ˈkɑ:bən daɪˈɔksaɪd] 📢 UK📢 US
adv.聚精会神地；周到地；谛；凝神；
vi.足够；有能力； vt.满足…的需要；使满足；
n.中指；中拇指；
n.二氧化碳；
(1) spoken/written discourse (2) discourse analysis (3) He was hoping for some lively political discourse at the meeting.
(1) political savvy (2) savvy shoppers (3) He is known for his political savvy and strong management skills.
savvy [ˈsævi] 📢 UK📢 US
n.反映；（关于某课题的）思考；（声、光、热等的）反射；映像；
vt.使协调；<音>调音；
v.知道，了解； n.机智；头脑；理解；悟性； adj.有见识的，懂实际知识的，通情达理的；
vt.描绘，描画；描述；
(1) Ventilate the room properly when paint stripping... (2) The pit is ventilated by a steel fan. (3) He did not think it the job of officials to ventilate their doubts or daydreams.
ventilation [ˌventɪ'leɪʃn] 📢 UK📢 US
n.[数]连续统；[经]连续统一体；闭联集；[物]连续区；
n.空气流通；通风设备；通风方法；公开讨论；
vt.围绕，包围；包含或包括某事物；完成；
n.食指；
(1) The regime built up the largest army in Africa... (2) The collection has been built up over the last seventeen years... (3) Build her up with kindness and a sympathetic ear...
build up [bild ʌp] 📢 UK📢 US
逐步建立；增进；（在某个地方）盖满了建筑物；宣扬；
adj.（尤指爱情）得不到回应或报答的；
逐步建立；增进；（在某个地方）盖满了建筑物；宣扬；
n.多样化，（人在种族、民族、宗教等方面的）多样性；差异；分歧；
(1) High - density plywood was used for all formed surfaces. (2) This high initial capitalization is rapidly amortized in the well managed high - density orchard. (3) This region contains areas which are prinarily covered with either high density conifers or meadow hardwoods.
high-density [hai ˈdensiti] 📢 UK📢 US
只要；
[医]高密度；
n.解释，说明；翻译；表演，演绎；理解；
vt.打开；散开；
(1) I'm a complete novice at skiing. (2) computer software for novices/the novice user (3) I'm a novice at these things, Lieutenant. You're the professional...
(1) Nothing about this sum has come to light. (2) It has come to light that he was lying. (3) The conspiracy did not come to light until a newspaper reporter noticed.
(1) The limit for carbon monoxide is 4.5 per cent of the exhaust gas. (2) Objective To explore resistance to carbon monoxide poisonous hypoxia by Ligustrazin. (3) Others monitor methane, carbon monoxide, ozone, lead, and all sorts of particles.
carbon monoxide [ˈkɑ:bən məˈnɔkˌsaɪd] 📢 UK📢 US
n.范围，规模；保险项目；〈美〉（新闻）报导；[植]优势度；
<正>分担，参加；与；插脚；厕足其间；
n.一氧化碳；
认为…是…；
(1) I'd convinced myself (that) I was right. (2) I've been trying to convince him to see a doctor. (3) You'll need to convince them of your enthusiasm for the job.